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cronapp-cordova-plugin-ratio-crop

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cronapp-cordova-plugin-ratio-crop

RatioCrop based on qwerqwermhc/Crop.

  • 2.9.6-SP.33
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
39
decreased by-86.6%
Maintainers
1
Weekly downloads
 
Created
Source

RatioCrop

Take or select picture, crops images with aspect ratio and get base64.

Installation

  1. Install the Cordova and Ionic Native plugins:
$ ionic cordova plugin add cordova-plugin-camera
$ npm install --save @ionic-native/camera

$ ionic cordova plugin add cordova-plugin-ratio-crop
$ npm install --save ionic-cordova-plugin-ratio-crop
  1. Add plugins to providers section on your app's module
import { RatioCrop } from 'ionic-cordova-plugin-ratio-crop';
import { Camera } from '@ionic-native/camera';

...

@NgModule({
  declarations: [
    MyApp
  ],
  imports: [
    ...
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp
  ],
  providers: [
    ...
    Camera,
    RatioCrop,
    ...
  ]
})
export class AppModule { }

Supported platforms

  • Android
  • iOS

Usage

import { Camera } from '@ionic-native/camera';
import { RatioCrop, RatioCropOptions } from 'ionic-cordova-plugin-ratio-crop';

...

private cropOptions: RatioCropOptions = {
    quality: 75,
    targetWidth: 1080,
    targetHeight: 1080,
    widthRatio: -1,
    heightRatio: -1
  };

... 

constructor(
    private camera: Camera,
    private crop: RatioCrop) { }

...

takePicture() {
    return this.camera.getPicture({
      destinationType: this.camera.DestinationType.FILE_URI,
      encodingType: this.camera.EncodingType.JPEG,
      mediaType: this.camera.MediaType.PICTURE,
      sourceType: this.camera.PictureSourceType.CAMERA,
      allowEdit: false,
      correctOrientation: true
    })
      .then((fileUri) => {
        return this.crop.ratioCrop(fileUri, this.cropOptions);
      })
      .then((path) => {
        return this.encodeToBase64(path);
      })
  }

  selectPicture() {
    return this.camera.getPicture({
      allowEdit: false,
      sourceType: this.camera.PictureSourceType.PHOTOLIBRARY,
      mediaType: this.camera.MediaType.PICTURE,
      destinationType: this.camera.DestinationType.FILE_URI
    })
      .then((fileUri) => {
        return this.crop.ratioCrop(fileUri, this.cropOptions);
      })
      .then((path) => {
        return this.encodeToBase64(path);
      })
  }

  encodeToBase64(src) {
    return new Promise((resolve, reject) => {
      let xhr = new XMLHttpRequest();
      xhr.onload = function () {
        let reader = new FileReader();
        reader.onloadend = function () {
          resolve(reader.result);
        }
        reader.readAsDataURL(xhr.response);
      };
      xhr.open('GET', src);
      xhr.responseType = 'blob';
      xhr.send();
    });
  }
  

Credits

Problems and Solutions

Problem

"No Image Selected" error on Android 4.4 device. (Camera Plugin + Background Mode Plugin)

Solution
Explanation

Keywords

FAQs

Package last updated on 15 Dec 2023

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